Imagination is the only limitation to how much the microSHIFT thumbies can do. Their small minimalistic designs are packed with precision machined mechanism that allows you to shift accurately with either index or friction mode. Go on any adventure without worries for mechanical issues. Features: Include shift cables Indexed or friction mode convertible rear shifter Indexed mode is compatible with Shimano 9-speed mountain and road systems Specifications: Shifter Style: Thumb Speed: 2/3 x 9 Speed Derailleur Compatibility: Shimano Road & Mountain (6, 7, 8, 9 Speed), Shimano Road (10 Speed) Shift Mechanism: Cable Actuated Color: Silver Weight: -